[OutputBuilder] WIP: Enable display of rule RHS data received from server.
[OutputBuilder] WIP: Enable display of rule RHS data received from
server.

3. Introduce new Backbone view for rendering rule RHS (`RHSView`);
   instantiate and render it as part of the rendering process of the
   RuleView.

itsjeyd/ODE,itsjeyd/ODE,itsjeyd/ODE,itsjeyd/ODE